Effect of Strengthening of Steel Beams with Variable Length by Using Carbon Fiber

<table class="table-group" id="tab5"><tr><td><table class="table"><tr><td class="thead-hr" colspan="5"><hr/></td></tr><tr class="thead"><td class="align_left">Beam designation</td><td class="align_center">Clear span (mm)</td><td class="align_center">CFRP laminates</td><td class="align_center">Length of CFRP laminate (cm)</td><td class="align_center"><span style="width: 158.252ptpx;"><svg height="12.7112pt" id="M9" style="vertical-align:-3.403299pt" version="1.1" viewbox="-0.0498162 -9.3079 158.252 12.7112" width="158.252pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.013,0,0,-0.013,0,0)"><path d="M614 175C564 76 510 21 408 21C256 21 146 149 146 336C146 488 235 629 402 629C510 629 570 586 597 480L626 488C620 541 614 582 606 638C578 643 510 665 429 665C206 665 44 527 44 316C44 157 153 -15 402 -15C474 -15 558 5 586 11C604 45 629 119 643 165L614 175Z"></path></g><g transform="matrix(.013,0,0,-0.013,8.645,0)"><path d="M493 503C489 551 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335 -206 240 -206C166 -206 108 -165 108 -110C108 -82 128 -54 154 -32C172 -17 195 -11 241 -11Z"></path></g><g transform="matrix(.013,0,0,-0.013,146.844,0)"><path d="M298 36L289 62C276 55 253 45 228 45C202 45 169 60 169 141V397H276C289 405 292 426 282 437H169V574L155 576L90 509V437H45L17 408L21 397H90V107C90 28 125 -12 188 -12C198 -12 213 -8 230 1L298 36Z"></path></g><g transform="matrix(.013,0,0,-0.013,150.887,0)"><path d="M513 0V26C455 31 447 37 447 103V278C447 398 390 449 309 449C255 449 202 412 166 376V712C127 700 67 684 19 677V653C85 647 87 643 87 580V103C87 37 79 31 19 26L18 0H231V26C171 32 166 39 166 103V341C194 373 232 392 270 392C337 392 368 351 368 269V103C368 38 360 32 302 26V0H513Z"></path></g></svg></span></td></tr><tr><td class="thead-hr" colspan="5"><hr/></td></tr><tr><td class="align_left">C1</td><td class="align_center">1900</td><td class="align_center">Without CFRP</td><td class="align_center">133</td><td class="align_center">0.7</td></tr><tr><td class="align_left">C2</td><td class="align_center">1900</td><td class="align_center">With CFRP</td><td class="align_center">—</td><td class="align_center">—</td></tr><tr><td class="align_left">B1</td><td class="align_center">1400</td><td class="align_center">Without CFRP</td><td class="align_center">98</td><td class="align_center">0.7</td></tr><tr><td class="align_left">B2</td><td class="align_center">1400</td><td class="align_center">With CFRP</td><td class="align_center">—</td><td class="align_center">—</td></tr><tr class="table-tr"><td colspan="5"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Description of the tested steel beams.</div>

Journal of Engineering

tab5

Table 5

Table 5: Effect of Strengthening of Steel Beams with Variable Length by Using Carbon Fiber 